Java random helper

hRandom.java

import java.util.Random;

public class hRandom {

    private static Random localRandom;

    /**
     * returns a random value between min (inclusive) and max (inclusive)
     * @param min minimum value
     * @param max maximum value
     * @return random integer
     */
    public static int getRandomNumberInRange(int min, int max) {
        // only create one instance!
        if (localRandom == null) {
            localRandom = new Random();
        }

        if (min >= max) {
            throw new IllegalArgumentException("max ("+ max +") must be greater than min ("+ min +")");
        }

        return localRandom.nextInt((max - min) + 1) + min;
    }
}